Loom for the manufacture of tufted or pile fabrics.



PATENTED DEC. 3, 1907.

. GREENWOOD. LOOM FOR THE MANUFAGTURE 0F TUFTED 0R PILB FABRICS.

APPLICATION FILED MAR. 20, 1907.

THOMAS GREENWOOD, OF WOLVERLEY, NEAR KIDDERMINSTER, ENGLAND.

LOOM FOR THE MANUFACTURE OF TUFTED OR PILE FABRICS.

Specification of Letters Patent.

Patented. Dec. 3, 1907.

Application filed March 20.1907. Serial No. 363.343.

To all whom it may concern:

Be it known that I, THOMAS GREENWOOD, subject of His Majesty the King ofGreat Britain and Ireland, residing at The Shrubbery, VVolverley, nearKidderminster, in the county of Worcester, England, mechanic, haveinvented new and useful Improvements in Looms for the Manufacture ofTufted or Pile Fabrics, of which the following is a specification.

This invention hasreference to looms for the manufacture of tufted orpile fabrics and more particularly of carpets or fabrics of the kindknown as Royal Axminster or moquette. A loom of the kind to which thisinvention relates is described in the specification of British LettersPatent N 0. 15680 of 1890 and various improvements in the same loom aredescribed in the subsequent British Specifications Nos. 11268 of 1891,24086 Of 1892, 11397 of 1894 and 1095 of 1900. In a loom of the kindabove referred to the pile of the carpet or fabric is formed of tuftswhich are severed from the pile yarns in the yarn carriers and arebrought forward by grippers which lay the tufts against the fell of thecarpet where the tufts are bound into the carpet by the weft when thelatter is beaten up by the slay. When a loom of this kind is made extrawide so as to enable it to weave much wider carpets and fabrics than ispossible with a loom constructed as described in the specificationsabove referred to, the combined knife blade and knife slide, which iscarried by the top beam and along which the moving knife boxes andknives move to sever the ends of the yarns to form the tufts, being verylong is apt to sag and spring but this sagging and springing of thecombined knife blade and knife slide is prevented by my invention whichis carried out as I will 'describe by referring to the accompanyingdrawing on which Figure 1 is a front elevation of a portion of the topbeam of the loom with the combined knife blade and knife slide andshowing my invention applied thereto; Fig. 2 is a cross section of thesame on line V V of Fig. 1; Fig. 3 is a cross section of thesame on lineW W of Fig. 1; Fig. 4 is a cross section of the same on line X X of Fi1; Fig. 5 is a cross sectional plan of part of the same on line Y Y ofFig. 4; and Fig. 6 is an end sectional elevation of the same taken online Z Z of Fig. 1.

a is the long horizontal knife blade and b is the knife slide fixed tothe knife blade a for the knife boxes with the moving knives to travelalong. In order to prevent any sagging or springing of the knife blade(1 and knife guide 6, which in the extra wide loom have to be made verylong as aforesaid, I employ the following arrangement of parts. Adjacentto the knife blade at and at the front of the same and running along thewhole length of it I provide a horizontal shaft 0 which is carried byand turns in bearings d bolted to the underside of the top beam or yarncarriage 6. Connected on to this shaft 0 at convenient intervals apartare levers f the outer ends g of which are slotted and connected by pinsh to brackets i fixed to the back of the knife blade at. The top beam oryarn carriage e is provided on its underside with inclined anglebrackets y' at certain intervals apart on which work slides 7c fixed tothe back of the knife blade a.

The shaft 0 has a rocking movement imparted to it by a lever Z fixed toone end of v the shaft and operated by a lifting rod m at one end whichis actuated by a cam so as to turn the levers] through the proper angleto raise and lower the knife blade at and knife slide it fixed theretoon the brackets j, which latter are arranged at such an angle as to givethe knife the necessary downward and backward movement to bring it on tothe yarns when the latter are pulled out by the grippers and so as toremove the knife c away from the yarns after they have been severed bythe traveling knives carried by the knife boxes which run along theknife guide 5. This arrangement while permitting free up and downmovements of the knife blade (1 and knife guide I) effectually preventthem from sagging or springing.

What I claim as my invention and desire to secure by Letters Patent isIn a wide loom of the kind herein referred to for weaving tufted or pilefabrics, the combination with the knife blade and sliding knife guidewhich extends across the whole width. of the set of yarns; of the topbeam one or more downwardly projecting inclined guide brackets fixed tothe top beam slides fixed to the knife blade and adapted to be engagedby said guide brackets so that said knife blade is movable up and downthe same, a horizontal shaft and a series of levers connecting thecombined knife blade l name to this specification in the presence ofandf sliding lnife guide to the? said-horizontal two subscribingWitnesses. sha t Where y the combine knife and s idr T ing knife guideare effectually prevented FHOMAS GREEB WOOD 5 from sagging andspringing, substantially as Witnesses:

set forth. JAMEs AMPHERT MORTON, In testimony whereof I have signed myELLIS 'WILLIAM TALBOT.

